java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/matrix-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 02:30:13,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 02:30:13,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 02:30:13,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 02:30:13,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 02:30:13,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 02:30:13,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 02:30:13,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 02:30:13,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 02:30:13,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 02:30:13,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 02:30:13,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 02:30:13,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 02:30:13,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 02:30:13,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 02:30:13,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 02:30:13,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 02:30:13,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 02:30:13,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 02:30:13,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 02:30:13,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 02:30:13,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 02:30:13,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 02:30:13,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 02:30:13,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 02:30:13,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 02:30:13,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 02:30:13,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 02:30:13,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 02:30:13,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 02:30:13,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 02:30:13,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 02:30:13,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 02:30:13,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 02:30:13,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 02:30:13,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 02:30:13,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 02:30:13,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 02:30:13,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 02:30:13,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 02:30:13,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 02:30:13,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 02:30:13,432 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 02:30:13,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 02:30:13,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 02:30:13,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 02:30:13,434 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 02:30:13,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 02:30:13,434 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 02:30:13,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 02:30:13,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 02:30:13,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 02:30:13,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 02:30:13,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 02:30:13,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 02:30:13,435 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 02:30:13,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 02:30:13,436 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 02:30:13,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 02:30:13,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 02:30:13,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 02:30:13,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 02:30:13,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 02:30:13,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 02:30:13,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 02:30:13,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 02:30:13,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 02:30:13,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 02:30:13,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 02:30:13,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 02:30:13,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 02:30:13,473 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 02:30:13,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 02:30:13,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 02:30:13,497 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 02:30:13,497 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 02:30:13,498 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-2.c [2019-09-08 02:30:13,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c7177395/917cfb373c3c491ba4a703d2fdd6edb8/FLAGe956995bb [2019-09-08 02:30:13,993 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 02:30:13,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c [2019-09-08 02:30:14,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c7177395/917cfb373c3c491ba4a703d2fdd6edb8/FLAGe956995bb [2019-09-08 02:30:14,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c7177395/917cfb373c3c491ba4a703d2fdd6edb8 [2019-09-08 02:30:14,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 02:30:14,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 02:30:14,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 02:30:14,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 02:30:14,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 02:30:14,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:30:14" (1/1) ... [2019-09-08 02:30:14,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6935f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:30:14, skipping insertion in model container [2019-09-08 02:30:14,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:30:14" (1/1) ... [2019-09-08 02:30:14,419 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 02:30:14,436 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 02:30:14,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:30:14,612 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 02:30:14,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:30:14,656 INFO L192 MainTranslator]: Completed translation [2019-09-08 02:30:14,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:30:14 WrapperNode [2019-09-08 02:30:14,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 02:30:14,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 02:30:14,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 02:30:14,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 02:30:14,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:30:14" (1/1) ... [2019-09-08 02:30:14,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:30:14" (1/1) ... [2019-09-08 02:30:14,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:30:14" (1/1) ... [2019-09-08 02:30:14,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:30:14" (1/1) ... [2019-09-08 02:30:14,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:30:14" (1/1) ... [2019-09-08 02:30:14,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:30:14" (1/1) ... [2019-09-08 02:30:14,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:30:14" (1/1) ... [2019-09-08 02:30:14,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 02:30:14,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 02:30:14,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 02:30:14,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 02:30:14,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:30:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 02:30:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 02:30:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 02:30:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-08 02:30:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 02:30:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 02:30:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 02:30:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-08 02:30:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 02:30:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 02:30:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 02:30:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 02:30:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 02:30:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 02:30:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 02:30:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 02:30:15,182 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 02:30:15,183 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-08 02:30:15,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:30:15 BoogieIcfgContainer [2019-09-08 02:30:15,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 02:30:15,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 02:30:15,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 02:30:15,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 02:30:15,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 02:30:14" (1/3) ... [2019-09-08 02:30:15,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9ee602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:30:15, skipping insertion in model container [2019-09-08 02:30:15,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:30:14" (2/3) ... [2019-09-08 02:30:15,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9ee602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:30:15, skipping insertion in model container [2019-09-08 02:30:15,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:30:15" (3/3) ... [2019-09-08 02:30:15,192 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2019-09-08 02:30:15,202 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 02:30:15,208 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 02:30:15,225 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 02:30:15,256 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 02:30:15,257 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 02:30:15,257 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 02:30:15,258 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 02:30:15,258 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 02:30:15,258 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 02:30:15,258 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 02:30:15,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 02:30:15,258 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 02:30:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-09-08 02:30:15,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-08 02:30:15,284 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:30:15,285 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:30:15,288 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:30:15,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:30:15,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2125374060, now seen corresponding path program 1 times [2019-09-08 02:30:15,296 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:30:15,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:30:15,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:30:15,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:30:15,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:30:15,380 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 02:30:15,381 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 02:30:15,381 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-08 02:30:15,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:30:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:30:15,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2019-09-08 02:30:15,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:30:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:30:15,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:30:15,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 02:30:15,482 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 02:30:15,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 02:30:15,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 02:30:15,500 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-09-08 02:30:15,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:30:15,527 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2019-09-08 02:30:15,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 02:30:15,529 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-08 02:30:15,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:30:15,538 INFO L225 Difference]: With dead ends: 52 [2019-09-08 02:30:15,539 INFO L226 Difference]: Without dead ends: 24 [2019-09-08 02:30:15,542 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 02:30:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-08 02:30:15,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-09-08 02:30:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-08 02:30:15,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-09-08 02:30:15,587 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2019-09-08 02:30:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:30:15,588 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-09-08 02:30:15,588 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 02:30:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-09-08 02:30:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-08 02:30:15,589 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:30:15,589 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:30:15,590 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:30:15,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:30:15,590 INFO L82 PathProgramCache]: Analyzing trace with hash 739661195, now seen corresponding path program 1 times [2019-09-08 02:30:15,591 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:30:15,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:30:15,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:30:15,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:30:15,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:30:15,601 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 02:30:15,601 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 02:30:15,601 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-08 02:30:15,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:30:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:30:15,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 02:30:15,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:30:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:30:15,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:30:15,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 02:30:15,739 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 02:30:15,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 02:30:15,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 02:30:15,740 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 5 states. [2019-09-08 02:30:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:30:15,824 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2019-09-08 02:30:15,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 02:30:15,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-08 02:30:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:30:15,829 INFO L225 Difference]: With dead ends: 49 [2019-09-08 02:30:15,829 INFO L226 Difference]: Without dead ends: 35 [2019-09-08 02:30:15,830 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 02:30:15,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-08 02:30:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2019-09-08 02:30:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-08 02:30:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-09-08 02:30:15,842 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2019-09-08 02:30:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:30:15,842 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-09-08 02:30:15,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 02:30:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-09-08 02:30:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-08 02:30:15,844 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:30:15,844 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:30:15,844 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:30:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:30:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1656958391, now seen corresponding path program 1 times [2019-09-08 02:30:15,845 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:30:15,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:30:15,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:30:15,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:30:15,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:30:15,854 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 02:30:15,855 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 02:30:15,855 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-08 02:30:15,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:30:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:30:15,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-08 02:30:15,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:30:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:30:15,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:30:15,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 02:30:15,933 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 02:30:15,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 02:30:15,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 02:30:15,934 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2019-09-08 02:30:16,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:30:16,010 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2019-09-08 02:30:16,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 02:30:16,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-09-08 02:30:16,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:30:16,012 INFO L225 Difference]: With dead ends: 57 [2019-09-08 02:30:16,012 INFO L226 Difference]: Without dead ends: 32 [2019-09-08 02:30:16,013 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 02:30:16,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-08 02:30:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2019-09-08 02:30:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-08 02:30:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-09-08 02:30:16,019 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2019-09-08 02:30:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:30:16,019 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-09-08 02:30:16,020 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 02:30:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-09-08 02:30:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-08 02:30:16,021 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:30:16,021 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:30:16,021 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:30:16,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:30:16,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1471852900, now seen corresponding path program 1 times [2019-09-08 02:30:16,022 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:30:16,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:30:16,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:30:16,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:30:16,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:30:16,031 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-08 02:30:16,031 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-08 02:30:16,031 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-08 02:30:16,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:30:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 02:30:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 02:30:16,141 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 02:30:16,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 02:30:16 BoogieIcfgContainer [2019-09-08 02:30:16,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 02:30:16,205 INFO L168 Benchmark]: Toolchain (without parser) took 1800.03 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 91.0 MB in the beginning and 95.4 MB in the end (delta: -4.4 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2019-09-08 02:30:16,206 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 135.8 MB. Free memory was 110.3 MB in the beginning and 110.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 02:30:16,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.54 ms. Allocated memory is still 135.8 MB. Free memory was 90.8 MB in the beginning and 80.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-09-08 02:30:16,211 INFO L168 Benchmark]: Boogie Preprocessor took 123.90 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 80.6 MB in the beginning and 178.4 MB in the end (delta: -97.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-08 02:30:16,212 INFO L168 Benchmark]: RCFGBuilder took 402.59 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 162.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-08 02:30:16,213 INFO L168 Benchmark]: TraceAbstraction took 1015.84 ms. Allocated memory is still 202.4 MB. Free memory was 162.3 MB in the beginning and 95.4 MB in the end (delta: 66.9 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. [2019-09-08 02:30:16,223 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 135.8 MB. Free memory was 110.3 MB in the beginning and 110.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.54 ms. Allocated memory is still 135.8 MB. Free memory was 90.8 MB in the beginning and 80.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.90 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 80.6 MB in the beginning and 178.4 MB in the end (delta: -97.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.59 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 162.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1015.84 ms. Allocated memory is still 202.4 MB. Free memory was 162.3 MB in the beginning and 95.4 MB in the end (delta: 66.9 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L15] unsigned int N_COL=__VERIFIER_nondet_uint(); [L16] unsigned int j,k; [L17] int matriz[N_COL][N_LIN], maior; [L19] maior = __VERIFIER_nondet_int() [L20] j=0 VAL [j=0, maior=-2147482808, matriz={-1:0}, N_COL=1, N_LIN=1] [L20] COND TRUE jmaior [L26] EXPR matriz[j][k] [L26] maior = matriz[j][k] [L21] k++ VAL [j=0, k=1, maior=-2147482807, matriz={-1:0}, N_COL=1, N_LIN=1] [L21] COND FALSE !(k